MATH,ALGEBRA

why are variables useful in algebra?
Also, what makes the use of variables difficult to understand?

Variables are things that change or vary.

Depending on which variables concern you, you might want to be able to predict just how they vary, and what factors influence this variation. Often finding these factors is difficult and finding how they fit into a formula is very difficult. This can be anything from calculating the potency of a drug to finding out how much heat is needed to keep a swimming pool at a desired temperature.

Why are variables useful in algebra? I feel the use of variables make it difficult for many people to understand because it is subconcious that math is numbers, not letters.... Thank you! By using a variable, one may make use of a

I neep help on two questions! A condition that occurs in multiple regression analysis if the independent variables are themselves correlated is known as: 1. autocorrelation 2. stepwise regression 3. multicorrelation 4. multicollinearity …